Compressed Air Supply Device Valve Segmentation
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Solution Overview
Problem
Existing compressed air supply devices for commercial vehicles experience unnecessary pressure loss and inefficiency when transitioning to energy-saving modes, particularly due to the coupling of the discharge valve with the regeneration function, leading to wastage of compressed air.
Innovation Solution
The implementation of two independent 3/2-way valve devices to control the drain valve and energy-saving compressor state, allowing for precise management of the regeneration and energy-saving functions, thereby minimizing pressure loss and optimizing operational states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the discharge valve is coupled with the regeneration function and opened during energy-saving mode transition, then the compressor can be switched to idle state, but unnecessary pressure loss occurs in the delivery line
Solution Approach 1:
The control functions are segmented into two independent valve devices: a first valve device (16) controlling the drain valve (20) and a second valve device (18) controlling the energy-saving output (28) and regeneration. This segmentation allows independent control of pressure management and energy-saving functions, preventing unnecessary pressure loss when transitioning to idle state while maintaining the ability to recover pressure in the delivery line.
2Reliability
If the discharge valve is opened for regeneration, then the filter unit can be regenerated, but compressed air volume in the delivery line is lost
Solution Approach 1:
The system segments the control of drain valve and regeneration into separate valve devices, allowing the drain valve to be opened independently for pressure recovery without necessarily triggering regeneration. This enables selective operation where pressure can be recovered in the delivery line while maintaining filter functionality, reducing unnecessary compressed air loss.
Solution Approach 2:
The system performs preliminary pressure recovery by opening the drain valve before or during regeneration initiation. The first valve device opens the drain valve to recover pressure in the delivery line upstream of the non-return valve, preparing the system for regeneration while minimizing the actual compressed air loss during the regeneration process.
3Loss of energy
If two independent valve devices are used to control drain valve and energy-saving functions, then pressure loss is minimized, but device complexity increases
Solution Approach 1:
The control system is segmented into two specialized valve devices with distinct functions: the first valve device handles drain valve control for pressure management, while the second valve device handles energy-saving output and regeneration control. This functional segmentation reduces overall system complexity by assigning specific responsibilities to each valve device, making the system more manageable despite the increased number of components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution ensures that pressure loss is only unavoidable during necessary regeneration, maintaining required pressure for regeneration functions and reducing energy wastage, enhancing the overall energy efficiency and functionality of the compressed air supply device.
Implementation Method 1
The air flowing through the filter unit absorbs at least some of the moisture in the filter unit
Data Source
Figure 1
AI summary
The compressed air supply circuit device (10) comprises a compressed air inlet (26), which is linked with a compressor. A filter unit (14) is linked with compressed air inlet by a conveyor pipe. A discharge valve (20) is linked with a discharge outlet (24) and the conveyor pipe. The valve unit (16) of the energy saving control output (28) and the other valve unit (18) of the drain valve and the regenertion of the filter unit are controlable and both valve units are supplied with compressed air. An independent claim is also included for a method for a operation of the compressed air supply circuit device.